Bash Shell
A shell is a program that reads the commands you type and runs them for you.
Bash is the most common shell on Linux, and Git Bash brings it to Windows. Some commands, like cd and echo, are built into the shell itself.
Give the shell a command
echo "Hello, World!"
Hello, World!Check if a command is built into the shell
type cd
cd is a shell builtin
type echo
echo is a shell builtin
